This high quality, heavy duty heat transfer fluid contains a specially designed package of corrosion inhibitors. It provides an operating temperature range of -46°C to 163°C, freeze protection to -51°C and burst protection to -73°C. Properties such as, high thermal conductivity, high boiling points, low toxicity, non-corrosivity, stability over a wide temperature range, and minimal to no fire hazard make it an optimal choice as a heat transfer fluid when mixed with water.